Patent US3743477A successfully refreshed from Google Patents.
US3743477A
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Process for reserving textiles of natural polyamide fibres and of synthetic fibres dyeable with acid dyes
Assignee: Sandoz AG
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Filing: 1968-06-24
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Granted: 1973-07-03
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Expires: 1988-06-24
Abstract
Abstract A process for the reservation of natural polyamide fibres against anionic dyes and acid dyeable synthetic fibres, which process consists of applying a solution or dispersion of one or more colourless, fibre-reactive compounds to areas of a material (composed by such fibres) that are to be reserved, and fixing the compound or compounds prior to coloration of the material.
Inventors
- 👤 H Egli
- 👤 H Ulshofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:56
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/12; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6426; D06P3/00; D06P3/02; D06P3/04; D06P3/06; D06P3/24; D06P3/241; D06P3/242; D06P3/26; D06P3/70; D06P3/74; D06P3/79; D06P3/791; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A process according to claim 1 wherein the synthetic polyamide fibre is a nylon fibre.
Claim 2
Dependent Claim
26 words
A process, according to claim 1, wherein the compound is fixed on the fiber by reacting the fiber-reactive compound with a nitrogen atom of the fiber.
Claim 3
Dependent Claim
32 words
A process according to claim 3 wherein fixing comprises reacting the fibre-reactive compound with a nitrogen atom of the fibre, whereupon hydrogen halide is liberated, said fibre-reactive compound being sodium 2,4-dichloro-6-phenylamino-1,3,5-triazine-4'' -sulfonate.
Claim 4
Dependent Claim
32 words
A process according to claim 3 wherein fixing comprises reacting the fibre-reactive compound with a nitrogen atom of the fibre, whereupon hydrogen halide is liberated, said fibre-reactive compound being sodium 2,4-dichloro-6-phenylamino-1,3,5-triazine-2'',5''-disulfonic acid.
Claim 5
Dependent Claim
13 words
A process according to claim 1 wherein the fibre is in textile form.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |